I specialize in solar and stellar astrophysics, with a primary emphasis on numerical modeling of solar and stellar dynamos, the formation of magnetic structures, and coronal heating. My expertise lies in elucidating the interplay between stellar dynamos and their coronae, modeling dynamo processes within the Sun and other stars. Specifically, I excel in elucidating turbulent processes governing magnetic field generation, employing analytical techniques such as the test-field method. Additionally, I am a key contributor to the development of the Pencil Code—a noteworthy achievement in my profile.
Education and Employment
01/2020–current Senior Postdoctoral Research Fellow, “UniSDyn” ERC CoG, MPS, Göttingen, Germany.
01/2018–12/2019 Postdoctoral Research Fellow of Max Planck Princeton Center for Plasma Physics, MPS, Göttingen, Germany.
01/2017–12/2017 Postdoctoral Research Fellow, MPS, Göttingen, Germany.
01/2015–12/2016 Marie-Curie Research Fellow, MPS, Göttingen, Germany.
11/2013–12/2014 Postdoctoral Research Fellow of Max Planck Princeton Center for Plasma Physics, MPS, Göttingen, Germany.
October 2013 Postdoctoral visitor, Department of Physics, Helsinki University, Finland.
July 2013 PhD, Department of Astronomy, Stockholm University, Sweden.
Title: Combining models of coronal mass ejections and solar dynamos, Advisors: Axel Brandenburg, Göran Scharmer (no grades given). Nominated by Department for two thesis awards on university level.
Warnecke, J., Korpi-Lagg, M., Gent, F. and
Rheinhardt, M. (2023) Numerical evidence for a small-scale dynamo
approaching solar magnetic Prandtl numbers, Nature Astronomy, 7, 662
Warnecke, J., and Peter, H. (2019) Data-driven
model of the solar corona above an active region, Astron. Astrophys.,
Warnecke, J. (2018), Dynamo cycles in global convection simulations of solar-like stars, Astron. Astrophys., 616, A72 https://ui.adsabs.harvard.edu/abs/2018A%26A...616A..72W/abstract
Warnecke, J., Rheinhardt, M., Tuomisto, S., Käpylä, P. J., Käpylä, M. J. and Brandenburg, A. (2018) Turbulent transport coefficients in spherical wedge dynamo simulations of solar-like stars, Astron. Astrophys., 609, A51 https://ui.adsabs.harvard.edu/abs/2018A%26A...609A..51W/abstract
Warnecke, J., Losada, I. R., Brandenburg, A., Kleeorin, N., & Rogachevskii, I.
(2013) Bipolar magnetic structures driven
by stratified turbulence with a coronal envelope, Astrophys. J. Lett., 777,